CVE-2026-6131 Totolink A7100RU CGI cstecgi.cgi setTracerouteCfg os command injection
Remote attackers can execute arbitrary OS commands on Totolink A7100RU routers via the setTracerouteCfg CGI handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6131?
CVE-2026-6131 is a critical command injection vulnerability in Totolink A7100RU, published on 12 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument command results in os command injection. The attack may be launched remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-6131?
How do I fix CVE-2026-6131?
No fix has been published for CVE-2026-6131 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-6131 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6131 exists.
Sources
Also known as GHSA-g7p4-8pj8-9c46.